All quadrilaterals (including parallelograms) have 360 degrees.
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The sum of all the angles in a parallelogram is 360°.
If it is a rectangle, then all its angles are 90 degrees and it is a parallelogram!
It is not a requirement that any of the angles are right angles (90 degrees), to qualify as a parallelogram.
A parallelogram has 4 interior angles that add up to 360 degrees
A parallelogram has 4 sides and 4 interior angles that add up to 360 degrees